Convert ORF to WEBP — Smaller Web Files
An Olympus ORF file is 15–25 MB of RAW sensor data, which is not something you put on a web page. WEBP is the modern answer — smaller than JPG at matching quality and supported by every current browser.
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Modern format with excellent compression. Limited browser support.
Apple's format. Excellent quality at small sizes.
Lossless format. Large files, ideal for print/archival.
256 colors max. Best for simple graphics.
Uncompressed bitmap. Very large files.
Vector trace. Best for logos and simple graphics. Not a pixel-perfect conversion.
Same format? You might want to compress instead.
SSIM-optimized — finds the lowest file size at your chosen visual fidelity.
Need to crop first? Use the Crop tool. Want to adjust or filter? Try the Editor.
Resize tool → Live preview, percentage scaling, and dimension presets.
Tip: Use PNG or WebP for transparent output. Standalone tool →
Lossless format — files can be large
GIF is limited to 256 colors
Best for logos, icons, and line art. Photos produce stylized results.
BMP files are uncompressed and can be very large. Consider TIFF (LZW) or PNG for lossless with smaller file sizes.
Leave empty for all pages. Multi-page PDFs produce a ZIP.
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ORF vs WEBP Comparison
| Feature | ORF | WEBP |
|---|---|---|
| Full Name | Olympus RAW Format | Web Picture Format |
| Lossy Compression | ❌ | ✅ |
| Lossless Compression | ✅ | ✅ |
| Transparency | ❌ | ✅ |
| Animation | ❌ | ✅ |
| Browser Support | None — RAW editors only | All modern browsers (Chrome, Firefox, Safari 14+, Edge) |
| Color Depth | 12-bit per channel | 16.7M+ (24/32-bit) |
| Typical Use | Olympus and OM System Micro Four Thirds cameras | Web images (smaller than JPG/PNG with same quality) |
| Year Introduced | 2002 | 2010 |
Why Convert ORF to WEBP?
WEBP is typically 25–35% smaller than JPG at matching quality and is supported by every current browser. For an Olympus shooter publishing 20 MP frames, that is bandwidth saved on every view. Note that Olympus sold its camera division in 2021 and the bodies now ship as OM System, but the file format and the .orf extension carried straight over.
How to Convert ORF to WEBP
Upload your ORF file. Up to 50 files per batch, 50 MB each.
KoalaPic decodes the Olympus RAW and encodes WEBP at quality 85 by default.
Download the WEBP, or adjust quality first if you want a smaller file.
Quality Note
WEBP at quality 85 is visually indistinguishable from the JPG equivalent while landing 25–35% smaller. For a 20 MP Olympus frame that is a meaningful saving on every page load.